Keeps getting rolled back or teleport to initial position!

This past week we've been experiencing a bug where it teleports our character to its initial position. If I jumped off from the top of a tower, it will teleport me back to the spot before I jumped off with the damage I received from the fall. If you engage in combat, it well teleport you back to the position you were in before engaging and the mobs you're fighting with will chase you. It's actually annoying that we would stop playing if it occurs a lot specially while questing or exploring. I failed escort quests three times already because of it.
Anyone got an idea on how to fix or avoid this?